Fish condensate as effective replacer of fish meal

Authors: Wattana Wattanakul Uraiwan Wattanakul Karun Thongprajukaew Chutchawan Muenpo

Publish Date: 2016/09/02

Volume: 43, Issue: 1, Pages: 217-228

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Abstract

The optimal protein replacement of fish meal FM by fish condensate FC was investigated in striped snakehead Channa striata Bloch 178 ± 002 g initial weight The FMbased diet 0FC was replaced by substituting protein from FC for 100 100FC 200 200FC 300 300FC 400 400FC 500 500FC or 600 600FC g kg−1 of the FM and a commercial diet CD for carnivorous fish was included for comparison The experiment was conducted indoors under completely randomized design 8 treatments × 3 replications × 60 fish per pond over a 6month trial There were no significant differences in water quality during the experiment The fish fed with 500FC had superior growth performance and feed utilization This dietary treatment gave similar levels to all observed specific activities of digestive enzymes as did baseline 0FC Survival carcass composition hematological parameters and liver histopathology were not negatively impacted by this protein replacement level Economic analysis also supports the use of this byproduct as a potent protein replacer in striped snakehead diet Findings from the current study indicate that a 500 g kg−1 protein replacement of FM by FC is near optimal for striped snakehead and similar use of it in the aquafeed of other species appears worth further studiesFinancial support was provided by the National Research Council of Thailand Contract No 2557A17102344 We acknowledge Assoc Prof Dr Seppo Karrila and the Publication Clinic Research and Development Office Prince of Songkla University for advice in manuscript preparation

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